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fp-ts

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Functional programming in TypeScript

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/** * @since 2.5.0 */ import { Applicative, Applicative1, Applicative2, Applicative2C, Applicative3, Applicative3C } from './Applicative' import { Compactable1, Separated } from './Compactable' import { Either } from './Either' import { Eq } from './Eq' import { Filterable1 } from './Filterable' import { FilterableWithIndex1, PredicateWithIndex, RefinementWithIndex } from './FilterableWithIndex' import { Foldable as FoldableHKT, Foldable1, Foldable2, Foldable3 } from './Foldable' import { FoldableWithIndex1 } from './FoldableWithIndex' import { Predicate, Refinement } from './function' import { Functor1 } from './Functor' import { FunctorWithIndex1 } from './FunctorWithIndex' import { HKT, Kind, Kind2, Kind3, URIS, URIS2, URIS3 } from './HKT' import { Magma } from './Magma' import { Monoid } from './Monoid' import { Option } from './Option' import { Semigroup } from './Semigroup' import { Show } from './Show' import { Traversable1 } from './Traversable' import { TraversableWithIndex1 } from './TraversableWithIndex' import { Unfoldable, Unfoldable1 } from './Unfoldable' import { PipeableWilt1, PipeableWither1, Witherable1 } from './Witherable' /** * @category model * @since 2.5.0 */ export declare type ReadonlyRecord<K extends string, T> = Readonly<Record<K, T>> /** * @category constructors * @since 2.5.0 */ export declare function fromRecord<K extends string, A>(r: Record<K, A>): ReadonlyRecord<K, A> /** * @category destructors * @since 2.5.0 */ export declare function toRecord<K extends string, A>(r: ReadonlyRecord<K, A>): Record<K, A> /** * @category instances * @since 2.5.0 */ export declare function getShow<A>(S: Show<A>): Show<ReadonlyRecord<string, A>> /** * Calculate the number of key/value pairs in a record * * @since 2.5.0 */ export declare function size(r: ReadonlyRecord<string, unknown>): number /** * Test whether a record is empty * * @since 2.5.0 */ export declare function isEmpty(r: ReadonlyRecord<string, unknown>): boolean /** * @since 2.5.0 */ export declare function keys<K extends string>(r: ReadonlyRecord<K, unknown>): ReadonlyArray<K> /** * Map a record into an array * * @example * import {collect} from 'fp-ts/ReadonlyRecord' * * const x: { a: string, b: boolean } = { a: 'foo', b: false } * assert.deepStrictEqual( * collect((key, val) => ({key: key, value: val}))(x), * [{key: 'a', value: 'foo'}, {key: 'b', value: false}] * ) * * @since 2.5.0 */ export declare function collect<K extends string, A, B>( f: (k: K, a: A) => B ): (r: ReadonlyRecord<K, A>) => ReadonlyArray<B> /** * @category destructors * @since 2.5.0 */ export declare const toReadonlyArray: <K extends string, A>(r: ReadonlyRecord<K, A>) => ReadonlyArray<readonly [K, A]> /** * Unfolds a record into a list of key/value pairs * * @category destructors * @since 2.5.0 */ export declare function toUnfoldable<F extends URIS>( U: Unfoldable1<F> ): <K extends string, A>(r: ReadonlyRecord<K, A>) => Kind<F, readonly [K, A]> export declare function toUnfoldable<F>( U: Unfoldable<F> ): <K extends string, A>(r: ReadonlyRecord<K, A>) => HKT<F, readonly [K, A]> /** * Insert or replace a key/value pair in a record * * @category combinators * @since 2.5.0 */ export declare function insertAt<K extends string, A>( k: K, a: A ): <KS extends string>(r: ReadonlyRecord<KS, A>) => ReadonlyRecord<KS | K, A> /** * @since 2.5.0 */ export declare function hasOwnProperty<K extends string>(k: string, r: ReadonlyRecord<K, unknown>): k is K /** * Delete a key and value from a map * * @category combinators * @since 2.5.0 */ export declare function deleteAt<K extends string>( k: K ): <KS extends string, A>(r: ReadonlyRecord<KS, A>) => ReadonlyRecord<string extends K ? string : Exclude<KS, K>, A> /** * @since 2.5.0 */ export declare function updateAt<A>( k: string, a: A ): <K extends string>(r: ReadonlyRecord<K, A>) => Option<ReadonlyRecord<K, A>> /** * @since 2.5.0 */ export declare function modifyAt<A>( k: string, f: (a: A) => A ): <K extends string>(r: ReadonlyRecord<K, A>) => Option<ReadonlyRecord<K, A>> /** * Delete a key and value from a map, returning the value as well as the subsequent map * * @since 2.5.0 */ export declare function pop<K extends string>( k: K ): <KS extends string, A>( r: ReadonlyRecord<KS, A> ) => Option<readonly [A, ReadonlyRecord<string extends K ? string : Exclude<KS, K>, A>]> /** * Test whether one record contains all of the keys and values contained in another record * * @since 2.5.0 */ export declare function isSubrecord<A>( E: Eq<A> ): { (that: ReadonlyRecord<string, A>): (me: ReadonlyRecord<string, A>) => boolean (me: ReadonlyRecord<string, A>, that: ReadonlyRecord<string, A>): boolean } /** * @category instances * @since 2.5.0 */ export declare function getEq<K extends string, A>(E: Eq<A>): Eq<ReadonlyRecord<K, A>> /** * Returns a `Monoid` instance for records given a `Semigroup` instance for their values * * @example * import { semigroupSum } from 'fp-ts/Semigroup' * import { getMonoid } from 'fp-ts/ReadonlyRecord' * * const M = getMonoid(semigroupSum) * assert.deepStrictEqual(M.concat({ foo: 123 }, { foo: 456 }), { foo: 579 }) * * @category instances * @since 2.5.0 */ export declare function getMonoid<K extends string, A>(S: Semigroup<A>): Monoid<ReadonlyRecord<K, A>> /** * Lookup the value for a key in a record * * @since 2.5.0 */ export declare function lookup(k: string): <A>(r: ReadonlyRecord<string, A>) => Option<A> export declare function lookup<A>(k: string, r: ReadonlyRecord<string, A>): Option<A> /** * @since 2.5.0 */ export declare const empty: ReadonlyRecord<string, never> /** * Map a record passing the keys to the iterating function * * @category combinators * @since 2.5.0 */ export declare function mapWithIndex<K extends string, A, B>( f: (k: K, a: A) => B ): (fa: ReadonlyRecord<K, A>) => ReadonlyRecord<K, B> /** * Map a record passing the values to the iterating function * * @category combinators * @since 2.5.0 */ export declare function map<A, B>(f: (a: A) => B): <K extends string>(fa: ReadonlyRecord<K, A>) => ReadonlyRecord<K, B> /** * @since 2.5.0 */ export declare function reduceWithIndex<K extends string, A, B>( b: B, f: (k: K, b: B, a: A) => B ): (fa: ReadonlyRecord<K, A>) => B /** * @since 2.5.0 */ export declare function foldMapWithIndex<M>( M: Monoid<M> ): <K extends string, A>(f: (k: K, a: A) => M) => (fa: ReadonlyRecord<K, A>) => M /** * @since 2.5.0 */ export declare function reduceRightWithIndex<K extends string, A, B>( b: B, f: (k: K, a: A, b: B) => B ): (fa: ReadonlyRecord<K, A>) => B /** * Create a record with one key/value pair * * @category constructors * @since 2.5.0 */ export declare function singleton<K extends string, A>(k: K, a: A): ReadonlyRecord<K, A> /** * @since 2.5.0 */ export declare function traverseWithIndex<F extends URIS3>( F: Applicative3<F> ): <K extends string, R, E, A, B>( f: (k: K, a: A) => Kind3<F, R, E, B> ) => (ta: ReadonlyRecord<K, A>) => Kind3<F, R, E, ReadonlyRecord<K, B>> export declare function traverseWithIndex<F extends URIS3, E>( F: Applicative3C<F, E> ): <K extends string, R, A, B>( f: (k: K, a: A) => Kind3<F, R, E, B> ) => (ta: ReadonlyRecord<K, A>) => Kind3<F, R, E, ReadonlyRecord<K, B>> export declare function traverseWithIndex<F extends URIS2>( F: Applicative2<F> ): <K extends string, E, A, B>( f: (k: K, a: A) => Kind2<F, E, B> ) => (ta: ReadonlyRecord<K, A>) => Kind2<F, E, ReadonlyRecord<K, B>> export declare function traverseWithIndex<F extends URIS2, E>( F: Applicative2C<F, E> ): <K extends string, A, B>( f: (k: K, a: A) => Kind2<F, E, B> ) => (ta: ReadonlyRecord<K, A>) => Kind2<F, E, ReadonlyRecord<K, B>> export declare function traverseWithIndex<F extends URIS>( F: Applicative1<F> ): <K extends string, A, B>( f: (k: K, a: A) => Kind<F, B> ) => (ta: ReadonlyRecord<K, A>) => Kind<F, ReadonlyRecord<K, B>> export declare function traverseWithIndex<F>( F: Applicative<F> ): <K extends string, A, B>(f: (k: K, a: A) => HKT<F, B>) => (ta: ReadonlyRecord<K, A>) => HKT<F, ReadonlyRecord<K, B>> /** * @since 2.5.0 */ export declare function traverse<F extends URIS3>( F: Applicative3<F> ): <R, E, A, B>( f: (a: A) => Kind3<F, R, E, B> ) => <K extends string>(ta: ReadonlyRecord<K, A>) => Kind3<F, R, E, ReadonlyRecord<K, B>> export declare function traverse<F extends URIS3, E>( F: Applicative3C<F, E> ): <R, A, B>( f: (a: A) => Kind3<F, R, E, B> ) => <K extends string>(ta: ReadonlyRecord<K, A>) => Kind3<F, R, E, ReadonlyRecord<K, B>> export declare function traverse<F extends URIS2>( F: Applicative2<F> ): <E, A, B>( f: (a: A) => Kind2<F, E, B> ) => <K extends string>(ta: ReadonlyRecord<K, A>) => Kind2<F, E, ReadonlyRecord<K, B>> export declare function traverse<F extends URIS2, E>( F: Applicative2C<F, E> ): <A, B>( f: (a: A) => Kind2<F, E, B> ) => <K extends string>(ta: ReadonlyRecord<K, A>) => Kind2<F, E, ReadonlyRecord<K, B>> export declare function traverse<F extends URIS>( F: Applicative1<F> ): <A, B>(f: (a: A) => Kind<F, B>) => <K extends string>(ta: ReadonlyRecord<K, A>) => Kind<F, ReadonlyRecord<K, B>> export declare function traverse<F>( F: Applicative<F> ): <A, B>(f: (a: A) => HKT<F, B>) => <K extends string>(ta: ReadonlyRecord<K, A>) => HKT<F, ReadonlyRecord<K, B>> /** * @since 2.5.0 */ export declare function sequence<F extends URIS3>( F: Applicative3<F> ): <K extends string, R, E, A>(ta: ReadonlyRecord<K, Kind3<F, R, E, A>>) => Kind3<F, R, E, ReadonlyRecord<K, A>> export declare function sequence<F extends URIS3, E>( F: Applicative3C<F, E> ): <K extends string, R, A>(ta: ReadonlyRecord<K, Kind3<F, R, E, A>>) => Kind3<F, R, E, ReadonlyRecord<K, A>> export declare function sequence<F extends URIS2>( F: Applicative2<F> ): <K extends string, E, A>(ta: ReadonlyRecord<K, Kind2<F, E, A>>) => Kind2<F, E, ReadonlyRecord<K, A>> export declare function sequence<F extends URIS2, E>( F: Applicative2C<F, E> ): <K extends string, A>(ta: ReadonlyRecord<K, Kind2<F, E, A>>) => Kind2<F, E, ReadonlyRecord<K, A>> export declare function sequence<F extends URIS>( F: Applicative1<F> ): <K extends string, A>(ta: ReadonlyRecord<K, Kind<F, A>>) => Kind<F, ReadonlyRecord<K, A>> export declare function sequence<F>( F: Applicative<F> ): <K extends string, A>(ta: ReadonlyRecord<K, HKT<F, A>>) => HKT<F, ReadonlyRecord<K, A>> /** * @category Witherable * @since 2.6.5 */ export declare const wither: PipeableWither1<URI> /** * @category Witherable * @since 2.6.5 */ export declare const wilt: PipeableWilt1<URI> /** * @since 2.5.0 */ export declare function partitionMapWithIndex<K extends string, A, B, C>( f: (key: K, a: A) => Either<B, C> ): (fa: ReadonlyRecord<K, A>) => Separated<ReadonlyRecord<string, B>, ReadonlyRecord<string, C>> /** * @since 2.5.0 */ export declare function partitionWithIndex<K extends string, A, B extends A>( refinementWithIndex: RefinementWithIndex<K, A, B> ): (fa: ReadonlyRecord<K, A>) => Separated<ReadonlyRecord<string, A>, ReadonlyRecord<string, B>> export declare function partitionWithIndex<K extends string, A>( predicateWithIndex: PredicateWithIndex<K, A> ): (fa: ReadonlyRecord<K, A>) => Separated<ReadonlyRecord<string, A>, ReadonlyRecord<string, A>> /** * @category combinators * @since 2.5.0 */ export declare function filterMapWithIndex<K extends string, A, B>( f: (key: K, a: A) => Option<B> ): (fa: ReadonlyRecord<K, A>) => ReadonlyRecord<string, B> /** * @since 2.5.0 */ export declare function filterWithIndex<K extends string, A, B extends A>( refinementWithIndex: RefinementWithIndex<K, A, B> ): (fa: ReadonlyRecord<K, A>) => ReadonlyRecord<string, B> export declare function filterWithIndex<K extends string, A>( predicateWithIndex: PredicateWithIndex<K, A> ): (fa: ReadonlyRecord<K, A>) => ReadonlyRecord<string, A> /** * Create a record from a foldable collection of key/value pairs, using the * specified `Magma` to combine values for duplicate keys. * * @since 2.5.0 */ export declare function fromFoldable<F extends URIS3, A>( M: Magma<A>, F: Foldable3<F> ): <K extends string, R, E>(fka: Kind3<F, R, E, readonly [K, A]>) => ReadonlyRecord<K, A> export declare function fromFoldable<F extends URIS2, A>( M: Magma<A>, F: Foldable2<F> ): <K extends string, E>(fka: Kind2<F, E, readonly [K, A]>) => ReadonlyRecord<K, A> export declare function fromFoldable<F extends URIS, A>( M: Magma<A>, F: Foldable1<F> ): <K extends string>(fka: Kind<F, readonly [K, A]>) => ReadonlyRecord<K, A> export declare function fromFoldable<F, A>( M: Magma<A>, F: FoldableHKT<F> ): <K extends string>(fka: HKT<F, readonly [K, A]>) => ReadonlyRecord<K, A> /** * Create a record from a foldable collection using the specified functions to * * - map to key/value pairs * - combine values for duplicate keys. * * @example * import { getLastSemigroup } from 'fp-ts/Semigroup' * import { readonlyArray, zip } from 'fp-ts/ReadonlyArray' * import { identity } from 'fp-ts/function' * import { ReadonlyRecord, fromFoldableMap } from 'fp-ts/ReadonlyRecord' * * // like lodash `zipObject` or ramda `zipObj` * export const zipObject = <K extends string, A>(keys: ReadonlyArray<K>, values: ReadonlyArray<A>): ReadonlyRecord<K, A> => * fromFoldableMap(getLastSemigroup<A>(), readonlyArray)(zip(keys, values), identity) * * assert.deepStrictEqual(zipObject(['a', 'b'], [1, 2, 3]), { a: 1, b: 2 }) * * // build a record from a field * interface User { * id: string * name: string * } * * const users: ReadonlyArray<User> = [ * { id: 'id1', name: 'name1' }, * { id: 'id2', name: 'name2' }, * { id: 'id1', name: 'name3' } * ] * * assert.deepStrictEqual(fromFoldableMap(getLastSemigroup<User>(), readonlyArray)(users, user => [user.id, user]), { * id1: { id: 'id1', name: 'name3' }, * id2: { id: 'id2', name: 'name2' } * }) * * @since 2.5.0 */ export declare function fromFoldableMap<F extends URIS3, B>( M: Magma<B>, F: Foldable3<F> ): <R, E, A, K extends string>(fa: Kind3<F, R, E, A>, f: (a: A) => readonly [K, B]) => ReadonlyRecord<K, B> export declare function fromFoldableMap<F extends URIS2, B>( M: Magma<B>, F: Foldable2<F> ): <E, A, K extends string>(fa: Kind2<F, E, A>, f: (a: A) => readonly [K, B]) => ReadonlyRecord<K, B> export declare function fromFoldableMap<F extends URIS, B>( M: Magma<B>, F: Foldable1<F> ): <A, K extends string>(fa: Kind<F, A>, f: (a: A) => readonly [K, B]) => ReadonlyRecord<K, B> export declare function fromFoldableMap<F, B>( M: Magma<B>, F: FoldableHKT<F> ): <A, K extends string>(fa: HKT<F, A>, f: (a: A) => readonly [K, B]) => ReadonlyRecord<K, B> /** * @since 2.5.0 */ export declare function every<A>(predicate: Predicate<A>): (r: ReadonlyRecord<string, A>) => boolean /** * @since 2.5.0 */ export declare function some<A>(predicate: (a: A) => boolean): (r: ReadonlyRecord<string, A>) => boolean /** * @since 2.5.0 */ export declare function elem<A>( E: Eq<A> ): { (a: A): (fa: ReadonlyRecord<string, A>) => boolean (a: A, fa: ReadonlyRecord<string, A>): boolean } /** * @category Filterable * @since 2.5.0 */ export declare const filter: { <A, B extends A>(refinement: Refinement<A, B>): (fa: Readonly<Record<string, A>>) => Readonly<Record<string, B>> <A>(predicate: Predicate<A>): (fa: Readonly<Record<string, A>>) => Readonly<Record<string, A>> } /** * @category Filterable * @since 2.5.0 */ export declare const filterMap: <A, B>( f: (a: A) => Option<B> ) => (fa: Readonly<Record<string, A>>) => Readonly<Record<string, B>> /** * @category Filterable * @since 2.5.0 */ export declare const partition: { <A, B extends A>(refinement: Refinement<A, B>): ( fa: Readonly<Record<string, A>> ) => Separated<Readonly<Record<string, A>>, Readonly<Record<string, B>>> <A>(predicate: Predicate<A>): ( fa: Readonly<Record<string, A>> ) => Separated<Readonly<Record<string, A>>, Readonly<Record<string, A>>> } /** * @category Filterable * @since 2.5.0 */ export declare const partitionMap: <A, B, C>( f: (a: A) => Either<B, C> ) => (fa: Readonly<Record<string, A>>) => Separated<Readonly<Record<string, B>>, Readonly<Record<string, C>>> /** * @category Foldable * @since 2.5.0 */ export declare const reduce: <A, B>(b: B, f: (b: B, a: A) => B) => (fa: Readonly<Record<string, A>>) => B /** * @category Foldable * @since 2.5.0 */ export declare const foldMap: <M>(M: Monoid<M>) => <A>(f: (a: A) => M) => (fa: Readonly<Record<string, A>>) => M /** * @category Foldable * @since 2.5.0 */ export declare const reduceRight: <A, B>(b: B, f: (a: A, b: B) => B) => (fa: Readonly<Record<string, A>>) => B /** * @category Compactable * @since 2.5.0 */ export declare const compact: <A>(fa: Readonly<Record<string, Option<A>>>) => Readonly<Record<string, A>> /** * @category Compactable * @since 2.5.0 */ export declare const separate: <A, B>( fa: Readonly<Record<string, Either<A, B>>> ) => Separated<Readonly<Record<string, A>>, Readonly<Record<string, B>>> /** * @category instances * @since 2.5.0 */ export declare const URI = 'ReadonlyRecord' /** * @category instances * @since 2.5.0 */ export declare type URI = typeof URI declare module './HKT' { interface URItoKind<A> { readonly [URI]: ReadonlyRecord<string, A> } } /** * @category instances * @since 2.7.0 */ export declare const Functor: Functor1<URI> /** * @category instances * @since 2.7.0 */ export declare const FunctorWithIndex: FunctorWithIndex1<URI, string> /** * @category instances * @since 2.7.0 */ export declare const Foldable: Foldable1<URI> /** * @category instances * @since 2.7.0 */ export declare const FoldableWithIndex: FoldableWithIndex1<URI, string> /** * @category instances * @since 2.7.0 */ export declare const Compactable: Compactable1<URI> /** * @category instances * @since 2.7.0 */ export declare const Filterable: Filterable1<URI> /** * @category instances * @since 2.7.0 */ export declare const FilterableWithIndex: FilterableWithIndex1<URI, string> /** * @category instances * @since 2.7.0 */ export declare const Traversable: Traversable1<URI> /** * @category instances * @since 2.7.0 */ export declare const TraversableWithIndex: TraversableWithIndex1<URI, string> /** * @category instances * @since 2.7.0 */ export declare const Witherable: Witherable1<URI> /** * @category instances * @since 2.5.0 */ export declare const readonlyRecord: FunctorWithIndex1<URI, string> & FoldableWithIndex1<URI, string> & FilterableWithIndex1<URI, string> & TraversableWithIndex1<URI, string> & Witherable1<URI>